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Move and reimplement convert_number_to_words.py
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2 changes: 1 addition & 1 deletion DIRECTORY.md
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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
* [Binary To Decimal](conversions/binary_to_decimal.py)
* [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
* [Binary To Octal](conversions/binary_to_octal.py)
* [Convert Number To Words](conversions/convert_number_to_words.py)
* [Decimal To Any](conversions/decimal_to_any.py)
* [Decimal To Binary](conversions/decimal_to_binary.py)
* [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
* [Co2 Emission](web_programming/co2_emission.py)
* [Convert Number To Words](web_programming/convert_number_to_words.py)
* [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
* [Crawl Google Results](web_programming/crawl_google_results.py)
* [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down
205 changes: 205 additions & 0 deletions conversions/convert_number_to_words.py
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from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
SHORT = (
(15, "quadrillion"),
(12, "trillion"),
(9, "billion"),
(6, "million"),
(3, "thousand"),
(2, "hundred"),
)

LONG = (
(15, "billiard"),
(9, "milliard"),
(6, "million"),
(3, "thousand"),
(2, "hundred"),
)

INDIAN = (
(14, "crore crore"),
(12, "lakh crore"),
(7, "crore"),
(5, "lakh"),
(3, "thousand"),
(2, "hundred"),
)

@classmethod
def max_value(cls, system: str) -> int:
"""
Gets the max value supported by the given number system.

>>> NumberingSystem.max_value("short") == 10**18 - 1
True
>>> NumberingSystem.max_value("long") == 10**21 - 1
True
>>> NumberingSystem.max_value("indian") == 10**19 - 1
True
"""
match (system_enum := cls[system.upper()]):
case cls.SHORT:
max_exp = system_enum.value[0][0] + 3
case cls.LONG:
max_exp = system_enum.value[0][0] + 6
case cls.INDIAN:
max_exp = 19
case _:
raise ValueError("Invalid numbering system")
return 10**max_exp - 1


class NumberWords(Enum):
ONES: ClassVar = {
0: "",
1: "one",
2: "two",
3: "three",
4: "four",
5: "five",
6: "six",
7: "seven",
8: "eight",
9: "nine",
}

TEENS: ClassVar = {
0: "ten",
1: "eleven",
2: "twelve",
3: "thirteen",
4: "fourteen",
5: "fifteen",
6: "sixteen",
7: "seventeen",
8: "eighteen",
9: "nineteen",
}

TENS: ClassVar = {
2: "twenty",
3: "thirty",
4: "forty",
5: "fifty",
6: "sixty",
7: "seventy",
8: "eighty",
9: "ninety",
}


def convert_small_number(num: int) -> str:
"""
Converts small, non-negative integers with irregular constructions in English (i.e.,
numbers under 100) into words.

>>> convert_small_number(0)
'zero'
>>> convert_small_number(5)
'five'
>>> convert_small_number(10)
'ten'
>>> convert_small_number(15)
'fifteen'
>>> convert_small_number(20)
'twenty'
>>> convert_small_number(25)
'twenty-five'
>>> convert_small_number(-1)
Traceback (most recent call last):
...
ValueError: This function only accepts non-negative integers
>>> convert_small_number(123)
Traceback (most recent call last):
...
ValueError: This function only converts numbers less than 100
"""
if num < 0:
raise ValueError("This function only accepts non-negative integers")
if num >= 100:
raise ValueError("This function only converts numbers less than 100")
tens, ones = divmod(num, 10)
if tens == 0:
return NumberWords.ONES.value[ones] or "zero"
if tens == 1:
return NumberWords.TEENS.value[ones]
return (
NumberWords.TENS.value[tens]
+ ("-" if NumberWords.ONES.value[ones] else "")
+ NumberWords.ONES.value[ones]
)


def convert_number(
num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
"""
Converts an integer to English words.

:param num: The integer to be converted
:param system: The numbering system (short, long, or Indian)

>>> convert_number(0)
'zero'
>>> convert_number(1)
'one'
>>> convert_number(100)
'one hundred'
>>> convert_number(-100)
'negative one hundred'
>>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
'one hundred twenty-three trillion four hundred fifty-six billion
seven hundred eighty-nine million twelve thousand three hundred forty-five'
>>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
'one hundred twenty-three thousand four hundred fifty-six milliard
seven hundred eighty-nine million twelve thousand three hundred forty-five'
>>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
'one crore crore twenty-three lakh crore
forty-five thousand six hundred seventy-eight crore
ninety lakh twelve thousand three hundred forty-five'
>>> convert_number(10**18)
Traceback (most recent call last):
...
ValueError: Input number is too large
>>> convert_number(10**21, "long")
Traceback (most recent call last):
...
ValueError: Input number is too large
>>> convert_number(10**19, "indian")
Traceback (most recent call last):
...
ValueError: Input number is too large
"""
word_groups = []

if num < 0:
word_groups.append("negative")
num *= -1

if num > NumberingSystem.max_value(system):
raise ValueError("Input number is too large")

for power, unit in NumberingSystem[system.upper()].value:
digit_group, num = divmod(num, 10**power)
if digit_group > 0:
word_group = (
convert_number(digit_group, system)
if digit_group >= 100
else convert_small_number(digit_group)
)
word_groups.append(f"{word_group} {unit}")
if num > 0 or not word_groups: # word_groups is only empty if input num was 0
word_groups.append(convert_small_number(num))
return " ".join(word_groups)


if __name__ == "__main__":
import doctest

doctest.testmod()

print(f"{convert_number(123456789) = }")
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Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
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Move and reimplement convert_number_to_words.py#8998

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cclauss
merged 2 commits into

from

Aug 20, 2023
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Move and reimplement convert_number_to_words.py#8998
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Move and reimplement convert_number_to_words.py


tianyizheng02 Aug 20, 2023
52ce213

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Aug 20, 2023

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DIRECTORY.md

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

205 changes: 205 additions & 0 deletions
conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

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color-scheme: dark light;
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Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
Skip to content
Move and reimplement convert_number_to_words.py#8998

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 Merged

cclauss
merged 2 commits into

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Aug 20, 2023
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Move and reimplement convert_number_to_words.py#8998
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7cdb54f

Move and reimplement convert_number_to_words.py


tianyizheng02 Aug 20, 2023
52ce213

updating DIRECTORY.md

Aug 20, 2023

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DIRECTORY.md

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

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conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

109 changes: 0 additions & 109 deletions
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
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Move and reimplement convert_number_to_words.py


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DIRECTORY.md

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

205 changes: 205 additions & 0 deletions
conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

109 changes: 0 additions & 109 deletions
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
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Move and reimplement convert_number_to_words.py#8998

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cclauss
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Move and reimplement convert_number_to_words.py


tianyizheng02 Aug 20, 2023
52ce213

updating DIRECTORY.md

Aug 20, 2023

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

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conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
Skip to content
Move and reimplement convert_number_to_words.py#8998

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cclauss
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Aug 20, 2023
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Move and reimplement convert_number_to_words.py#8998
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7cdb54f

Move and reimplement convert_number_to_words.py


tianyizheng02 Aug 20, 2023
52ce213

updating DIRECTORY.md

Aug 20, 2023

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DIRECTORY.md

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

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conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

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Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
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Move and reimplement convert_number_to_words.py


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52ce213

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Aug 20, 2023

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DIRECTORY.md

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

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conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Move and reimplement `convert_number_to_words.py` by tianyizheng02 · Pull Request #8998 · TheAlgorithms/Python · GitHub
Skip to content
Move and reimplement convert_number_to_words.py#8998

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cclauss
merged 2 commits into

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Aug 20, 2023
 Merged


Move and reimplement convert_number_to_words.py#8998
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7cdb54f

Move and reimplement convert_number_to_words.py


tianyizheng02 Aug 20, 2023
52ce213

updating DIRECTORY.md

Aug 20, 2023

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DIRECTORY.md

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,6 +143,7 @@
 * [Binary To Decimal](conversions/binary_to_decimal.py)
 * [Binary To Hexadecimal](conversions/binary_to_hexadecimal.py)
 * [Binary To Octal](conversions/binary_to_octal.py)
 * [Convert Number To Words](conversions/convert_number_to_words.py)
 * [Decimal To Any](conversions/decimal_to_any.py)
 * [Decimal To Binary](conversions/decimal_to_binary.py)
 * [Decimal To Binary Recursion](conversions/decimal_to_binary_recursion.py)
Expand DownExpand Up@@ -1203,7 +1204,6 @@

## Web Programming
 * [Co2 Emission](web_programming/co2_emission.py)
 * [Convert Number To Words](web_programming/convert_number_to_words.py)
 * [Covid Stats Via Xpath](web_programming/covid_stats_via_xpath.py)
 * [Crawl Google Results](web_programming/crawl_google_results.py)
 * [Crawl Google Scholar Citation](web_programming/crawl_google_scholar_citation.py)
Expand Down

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conversions/convert_number_to_words.py

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,205 @@
from enum import Enum
from typing import ClassVar, Literal


class NumberingSystem(Enum):
 SHORT = (
 (15, "quadrillion"),
 (12, "trillion"),
 (9, "billion"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 LONG = (
 (15, "billiard"),
 (9, "milliard"),
 (6, "million"),
 (3, "thousand"),
 (2, "hundred"),
 )

 INDIAN = (
 (14, "crore crore"),
 (12, "lakh crore"),
 (7, "crore"),
 (5, "lakh"),
 (3, "thousand"),
 (2, "hundred"),
 )

 @classmethod
 def max_value(cls, system: str) -> int:
 """
 Gets the max value supported by the given number system.

 >>> NumberingSystem.max_value("short") == 10**18 - 1
 True
 >>> NumberingSystem.max_value("long") == 10**21 - 1
 True
 >>> NumberingSystem.max_value("indian") == 10**19 - 1
 True
 """
 match (system_enum := cls[system.upper()]):
 case cls.SHORT:
 max_exp = system_enum.value[0][0] + 3
 case cls.LONG:
 max_exp = system_enum.value[0][0] + 6
 case cls.INDIAN:
 max_exp = 19
 case _:
 raise ValueError("Invalid numbering system")
 return 10**max_exp - 1


class NumberWords(Enum):
 ONES: ClassVar = {
 0: "",
 1: "one",
 2: "two",
 3: "three",
 4: "four",
 5: "five",
 6: "six",
 7: "seven",
 8: "eight",
 9: "nine",
 }

 TEENS: ClassVar = {
 0: "ten",
 1: "eleven",
 2: "twelve",
 3: "thirteen",
 4: "fourteen",
 5: "fifteen",
 6: "sixteen",
 7: "seventeen",
 8: "eighteen",
 9: "nineteen",
 }

 TENS: ClassVar = {
 2: "twenty",
 3: "thirty",
 4: "forty",
 5: "fifty",
 6: "sixty",
 7: "seventy",
 8: "eighty",
 9: "ninety",
 }


def convert_small_number(num: int) -> str:
 """
 Converts small, non-negative integers with irregular constructions in English (i.e.,
 numbers under 100) into words.

 >>> convert_small_number(0)
 'zero'
 >>> convert_small_number(5)
 'five'
 >>> convert_small_number(10)
 'ten'
 >>> convert_small_number(15)
 'fifteen'
 >>> convert_small_number(20)
 'twenty'
 >>> convert_small_number(25)
 'twenty-five'
 >>> convert_small_number(-1)
 Traceback (most recent call last):
 ...
 ValueError: This function only accepts non-negative integers
 >>> convert_small_number(123)
 Traceback (most recent call last):
 ...
 ValueError: This function only converts numbers less than 100
 """
 if num < 0:
 raise ValueError("This function only accepts non-negative integers")
 if num >= 100:
 raise ValueError("This function only converts numbers less than 100")
 tens, ones = divmod(num, 10)
 if tens == 0:
 return NumberWords.ONES.value[ones] or "zero"
 if tens == 1:
 return NumberWords.TEENS.value[ones]
 return (
 NumberWords.TENS.value[tens]
 + ("-" if NumberWords.ONES.value[ones] else "")
 + NumberWords.ONES.value[ones]
 )


def convert_number(
 num: int, system: Literal["short", "long", "indian"] = "short"
) -> str:
 """
 Converts an integer to English words.

 :param num: The integer to be converted
 :param system: The numbering system (short, long, or Indian)

 >>> convert_number(0)
 'zero'
 >>> convert_number(1)
 'one'
 >>> convert_number(100)
 'one hundred'
 >>> convert_number(-100)
 'negative one hundred'
 >>> convert_number(123_456_789_012_345) # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three trillion four hundred fifty-six billion
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(123_456_789_012_345, "long") # doctest: +NORMALIZE_WHITESPACE
 'one hundred twenty-three thousand four hundred fifty-six milliard
 seven hundred eighty-nine million twelve thousand three hundred forty-five'
 >>> convert_number(12_34_56_78_90_12_345, "indian") # doctest: +NORMALIZE_WHITESPACE
 'one crore crore twenty-three lakh crore
 forty-five thousand six hundred seventy-eight crore
 ninety lakh twelve thousand three hundred forty-five'
 >>> convert_number(10**18)
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**21, "long")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 >>> convert_number(10**19, "indian")
 Traceback (most recent call last):
 ...
 ValueError: Input number is too large
 """
 word_groups = []

 if num < 0:
 word_groups.append("negative")
 num *= -1

 if num > NumberingSystem.max_value(system):
 raise ValueError("Input number is too large")

 for power, unit in NumberingSystem[system.upper()].value:
 digit_group, num = divmod(num, 10**power)
 if digit_group > 0:
 word_group = (
 convert_number(digit_group, system)
 if digit_group >= 100
 else convert_small_number(digit_group)
 )
 word_groups.append(f"{word_group} {unit}")
 if num > 0 or not word_groups: # word_groups is only empty if input num was 0
 word_groups.append(convert_small_number(num))
 return " ".join(word_groups)


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 print(f"{convert_number(123456789) = }")

109 changes: 0 additions & 109 deletions
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